/*
 *
 * (c) Copyright Ascensio System Limited 2010-2018
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
 * Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
 *
 * You can contact Ascensio System SIA by email at sales@onlyoffice.com
 *
 * The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display 
 * Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
 *
 * Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains 
 * relevant author attributions when distributing the software. If the display of the logo in its graphic 
 * form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE" 
 * in every copy of the program you distribute. 
 * Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
 *
*/


using ASC.Core;
using log4net;
using System;
using System.Web.Http.Filters;

namespace ASC.HealthCheck.Infrastructure
{
    public class AddAccessControlAllowOriginHeaderFilter : ActionFilterAttribute
    {
        private const string AccessControlAllowOrigin = "Access-Control-Allow-Origin";
        private readonly ILog log = LogManager.GetLogger(typeof(AddAccessControlAllowOriginHeaderFilter));

        public override void OnActionExecuted(HttpActionExecutedContext actionExecutedContext)
        {
            try
            {
                // EnableCors does not work with Mono
                // use AddAccessControlAllowOriginHeaderFilter instead
                if (WorkContext.IsMono)
                {
                    log.Debug("AddAccessControlAllowOriginHeaderFilter OnActionExecuted");
                    if (actionExecutedContext != null && WorkContext.IsMono)
                    {
                        actionExecutedContext.Response.Content.Headers.Add(AccessControlAllowOrigin, "*");
                    }
                }
            }
            catch (Exception ex)
            {
                log.ErrorFormat("Unexpected error on AddAccessControlAllowOriginHeaderFilter: {0} {1}",
                    ex.ToString(), ex.InnerException != null ? ex.InnerException.Message : string.Empty);
            }
        }
    }
}